Search found 5 matches

by Nurul
Thu Dec 14, 2006 3:10 am
Forum: Vensim
Topic: change demand
Replies: 6
Views: 5974

Thanks Bob

It works!!.

Thank you
by Nurul
Wed Dec 13, 2006 10:11 am
Forum: Vensim
Topic: change demand
Replies: 6
Views: 5974

Thanks Tony, But I have one more problem. I have a randomly delay magnitude. for example, at time t=1, delay is 3 hour, at t=2 delay is 2 hour, and at t=3 delay is 6 hour. How do I convert the magnitude to time. I mean, for the first time, at time t=1, t=2, and t=3 the demand is 1,1,and 1. And becau...
by Nurul
Wed Dec 13, 2006 5:38 am
Forum: Vensim
Topic: change demand
Replies: 6
Views: 5974

Thanks bob, but it works only when I set trip duration to constant number. It doesnt work if I set trip duration as random number. Instead, I get a warning message "-customer-initial=3 Active=2 has changed in value", What does it mean? What should I do if I want to set trip duration as a r...
by Nurul
Tue Dec 12, 2006 6:50 am
Forum: Vensim
Topic: change demand
Replies: 6
Views: 5974

change demand

HI! I need help in modelling travel demand. If, for example, I have a demand at time t=7, t=15, and t=20. Every demand will travel for about 3 hours by car. So,demand will be 0 at time t=7, t=15, and t=20, and at time t=10, t=18, and t=23 demand will be 1. My problem is I can't change the demand at ...
by Nurul
Tue Dec 05, 2006 9:12 am
Forum: Vensim
Topic: Random Pulse
Replies: 1
Views: 2280

Random Pulse

Hi all,

I'm new in using Vensim, and I have a problem with the pulse.
If I want to set one randomly demand every 24 hours, how should I do?